Has anyone ever caught up on interest??

My husband and I make 4 payments a month on each of our loans (the minimum 4 times each). He has a Parent PLUS loan he’s paying back and I have an IDR one that used to be SAVE. (Mine was forgiven back when Biden did that, but then the forgiveness was rescinded when that lawsuit happened so that was fun.) Anyway, it seems no matter how much we’re doing, the entire thing just goes towards interest. I keep looking the statements and the interest never seems to move.

Am I doing something wrong or is it just meant to screw us?? I’m getting super frustrated.